Winchester 5.56x45mm NATO 55gr FMJ Ammo - 1000 Round Box Ballistics
Brass Case • FMJ
Winchester 5.56x45mm NATO 55gr FMJ Ammo - 1000 Round Box Ballistics
Brass Case • FMJ
Trajectory @ 100yd Zero
| Range | Velocity | Energy | Drop |
|---|---|---|---|
| Muzzle | 3180 fps | 1235 ft-lb | — |
| 25 yds | 3077 fps | 1157 ft-lb | -0.8" |
| 50 yds | 2978 fps | 1083 ft-lb | -0.3" |
| 75 yds | 2881 fps | 1014 ft-lb | -0.0" |
| 100 yds ⊕ | 2786 fps | 948 ft-lb | -0.0" |
| 125 yds | 2693 fps | 886 ft-lb | -0.3" |
| 150 yds | 2602 fps | 827 ft-lb | -0.9" |
| 175 yds | 2513 fps | 771 ft-lb | -1.8" |
| 200 yds | 2426 fps | 719 ft-lb | -3.0" |
| 225 yds | 2340 fps | 669 ft-lb | -4.6" |
| 250 yds | 2256 fps | 621 ft-lb | -6.6" |
| 275 yds | 2173 fps | 577 ft-lb | -9.1" |
| 300 yds | 2093 fps | 535 ft-lb | -12.0" |
| 325 yds | 2014 fps | 495 ft-lb | -15.4" |
| 350 yds | 1937 fps | 458 ft-lb | -19.3" |
| 375 yds | 1862 fps | 423 ft-lb | -23.8" |
| 400 yds | 1788 fps | 390 ft-lb | -29.0" |
| 425 yds | 1717 fps | 360 ft-lb | -34.8" |
| 450 yds | 1648 fps | 332 ft-lb | -41.3" |
| 475 yds | 1582 fps | 305 ft-lb | -48.7" |
| 500 yds | 1518 fps | 281 ft-lb | -56.9" |
Product Overview
Winchester loads this 55-grain FMJ to 3180 fps, producing 1235 ft-lbs at the muzzle. That velocity sits right in the M193 performance window, and the 0.246 G1 ballistic coefficient keeps the trajectory predictable out to 300 yards. Any standard twist rate from 1:7 to 1:12 will stabilize these rounds well. The brass cases reload cleanly for shooters who want to run them through a progressive press after range day.
High-volume range sessions are where this load earns its keep. The bulk format means fewer trips to the store and more time behind the rifle. Carbine courses, 3-gun practice stages, and weekend drills all burn through ammunition fast. Consistent pressure from round to round keeps your gas system running and your point of impact stable across long strings of fire. Steel plates ring, paper tears clean, and the FMJ design avoids the fouling that hollow points sometimes leave behind.
Winchester's commercial loading process holds tighter tolerances than many bulk options at this price tier. Velocity spreads stay reasonable, and primer reliability is strong even in cold weather. Compared to ZSR's 55-grain load at 3240 fps and ATS's offering at 3150 fps, this Winchester sits right in the middle on velocity while matching both on practical accuracy. For shooters who train regularly and want a known quantity from a domestic manufacturer, this is a straightforward choice.
- Bulk format reduces cost per round and supports extended training sessions without resupply
- Moderate 3180 fps velocity balances flat trajectory with manageable barrel wear over high round counts
- Brass cases are reloadable, adding long-term value for handloaders
- Reliable feeding geometry works across AR-15 platforms from mil-spec to modern carbines
- Standard FMJ construction offers no terminal expansion for defensive or hunting use
- The 0.246 G1 BC sheds velocity faster beyond 400 yards than boat tail alternatives
- Costs more per round than comparable offerings from ZSR or ATS despite similar ballistics
Similar Products Compared
| PRODUCT | WEIGHT | TYPE | VELOCITY | ENERGY | BC | PRICE/RD |
|---|---|---|---|---|---|---|
| 55 gr | FMJ | 3180 fps | 1235 ft-lbs | 0.246 | N/A | |
| 55 gr | FMJ | 3240 fps | 1224 ft-lbs | 0.243 | N/A | |
| 55 gr | FMJ | 3150 fps | 1210 ft-lbs | 0.371 | N/A |
All Winchester 5.56x45mm NATO 55gr FMJ Ammo - 1000 Round Box Prices
| DEALER | QTY | PRICE | SHIPPING | TOTAL | PRICE/RD |
|---|
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